I’ve heard of Howest before, seemed like a good school but I know nobody who studied there. I would keep practicing SW and probably take a look to Rhino, not sure which one they’ll teach you at Howest, but maybe you can ask them. Most design departments work with SW, Alias or Rhino. I’ll also start playing with Keyshot for renderings and animations, it’s quite easy and intuitive. ArchiCAD and SketchUp are more appropiate for architecture or exhibition design.